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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU Affero General Public License
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8 * as published by the Free Software Foundation, either version 3 of
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9 * the License, or (at your option) any later version.
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10 *
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11 * This program is distributed in the hope that it will be useful, but
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * Affero General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU Affero General Public License
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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18 **/
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19
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20
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21 #pragma once
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22
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23 #include "CacheManager.h"
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24 #include "ICacheFactory.h"
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25 #include "IPrefetchPolicy.h"
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26 #include "../../Orthanc/MultiThreading/SharedMessageQueue.h"
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27
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28 #include <boost/thread.hpp>
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29 #include <stdio.h>
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30
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31 namespace OrthancPlugins
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32 {
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33 class CacheScheduler : public boost::noncopyable
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34 {
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35 private:
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36 class Prefetcher;
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37 class PrefetchQueue;
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38 class BundleScheduler;
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39
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40 typedef std::map<int, BundleScheduler*> BundleSchedulers;
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41
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42 size_t maxPrefetchSize_;
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43
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44 boost::mutex cacheMutex_;
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45 boost::mutex factoryMutex_;
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46 boost::recursive_mutex policyMutex_;
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47 CacheManager& cache_;
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48 std::auto_ptr<IPrefetchPolicy> policy_;
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49 BundleSchedulers bundles_;
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50
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51 void ApplyPrefetchPolicy(int bundle,
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52 const std::string& item,
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53 const std::string& content);
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54
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55 BundleScheduler& GetBundleScheduler(unsigned int bundleIndex);
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56
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57 public:
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58 CacheScheduler(CacheManager& cache,
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59 unsigned int maxPrefetchSize);
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60
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61 ~CacheScheduler();
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62
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63 void Register(int bundle,
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64 ICacheFactory* factory /* takes ownership */,
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65 size_t numThreads);
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66
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67 void RegisterPolicy(IPrefetchPolicy* policy /* takes ownership */);
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68
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69 void Invalidate(int bundle,
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70 const std::string& item);
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71
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72 bool Access(std::string& content,
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73 int bundle,
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74 const std::string& item);
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75
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76 void Prefetch(int bundle,
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77 const std::string& item);
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78 };
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79 }
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